Objective To probe into the clinical effect of negative-potential therapeutic apparatus in the treatment of hypertension.Method The double blind

randomized and controlled trial was conducted

and 60 cases of patients with hypertension were chosen and divided into experimental group and control group.Patients in the experimental group received electrostatic therapies with the negative-potential therapeutic apparatus manufactured by Chongqing New Earth Electronics Co.

Ltd.while patients in the control group received placebo treatments

and treatments in both groups lasted for three months.Results In each course of treatment

effective rate in the experimental group was 100.00%

which was higher than that of 3.23% in the control group.In the experimental group

the obvious effective rate in the second and third course of treatment was lower than that in the first course of treatment and the differences were statistically significant（p<0.01）.All patients of the experimental group reduced the dosage of hypotensors during the second and third course of treatment while the dosage for those in the control group was not reduced.Conclusion Negative-potential therapeutic apparatus can assist in the treatment of hypertension.